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trezor-firmware/tools/trezor-pylint-plugin/README.md

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# Custom Pylint rule checker
For now, it catches the following problem (`async-awaitable-return`):
```python
async def show_foo() -> Awaitable[None]:
return show_something("foo")
```
This is almost certainly a mistake -- the caller would need to say `await (await
show_foo())` to actually show the foo.
The function should be one of:
```python
async def show_foo() -> None:
return await show_something("foo")
# ... or ...
def show_foo() -> Awaitable[None]:
return show_something("foo")
```